论文部分内容阅读
为提高水泵零件的使用寿命,我厂铸造车间于1973年开始进行稀土高强度灰铸铁的试验,经两年多时间,浇注了多级泵的进水段,出水段、中段、叶轮和联轴器等铸件。最大铸件重1.5吨,最小2～3公斤,均稳定的达到高牌号灰铸铁的要求。在小型破碎机的破碎板上试验,其耐磨性比高牌号灰铸铁提高一倍。我厂生产的稀土高强度铸件其机械性能和化学成分为:
In order to improve the service life of pump parts, our foundry workshop started the test of high strength gray cast iron of rare earth in 1973. After more than two years, the water inlet section, outlet section, middle section, impeller and coupling Castings and other equipment. The largest castings weighing 1.5 tons, the smallest 2 to 3 kg, are stable to reach the requirements of the high grade gray cast iron. In the small crusher crushing board test, its wear resistance than high grade gray cast iron to double. I plant the production of rare earth high strength castings of its mechanical properties and chemical composition: